#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>

int main()
{
    printf("testexec begin...\n");

    pid_t id =fork();
    
    if(id == 0)
    {
        sleep(2);
        execl("/usr/bin/ls", "ls", "-l", "-a", NULL);
        exit(1);
    }

    int status = 0;
    pid_t rid = waitpid(id, &status, 0);
    if(rid > 0)
    {
        printf("father wait success, child exit code: %d\n", WEXITSTATUS(status));
    }

    printf("testexec end...\n");

    return 0;
}
